Watching the actions and ignoring the words is a personal policy I've found very useful in dealing with top government figures who understand that power has nothing to do with truth and everything to do with narrative control, and in that particular case the president's claims were quickly memory holed after a highly suspicious chemical weapons allegation in Douma a few days later. The president's words said the troops were leaving, and what actually happened was the US bombing the Syrian government for a second time in a year while troops remained where they were.
Everyone completely lost their shit last month when the president once again made the claim that US troops will be brought home from Syria. Establishment loyalists of the political/media class went into full meltdown, Mattis handed in his resignation, and #Resistance Twitter pundits who'd never typed the word "Kurd" in their lives suddenly became self-appointed experts on the geopolitical dynamics between the Turkish government and the YPG. Support for the president's words also rushed in from anti-interventionists and anti-imperialists everywhere, as well as from a few surprising places like Democratic Representative Ted Liu and Democratic Senator Elizabeth Warren.